On Thu, Mar 04, 2021 at 03:25:27PM +0000, Robin Murphy wrote: > On 2021-03-01 08:42, Christoph Hellwig wrote: >> Use explicit methods for setting and querying the information instead. > > Now that everyone's using iommu-dma, is there any point in bouncing this > through the drivers at all? Seems like it would make more sense for the x86 > drivers to reflect their private options back to iommu_dma_strict (and > allow Intel's caching mode to override it as well), then have > iommu_dma_init_domain just test !iommu_dma_strict && > domain->ops->flush_iotlb_all. Indeed. I switch to that.